Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fad04f8bc6eabd1…

MALICIOUS

PDF

42.0 KB Created: 2021-06-08 15:09:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: be45e24d3e9963c4f80de2ba0c286ce0 SHA-1: 4192e4ac52be05fc6b0b4ce7336feb3f481ae740 SHA-256: 2fad04f8bc6eabd10f99a679c6b911ec5710565905eadc2ffc00be20ef676b58
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency or hacks to trick users into clicking malicious links. The document contains multiple embedded URLs pointing to redirectors and further malicious PDFs hosted on an IP address, indicating a phishing or scam campaign. The presence of a clipboard command lure suggests an attempt to trick users into executing commands, likely to download and execute further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 6

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.tw/app/431946152/free-lobby-roblox-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/roblox-hack-me-robux_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-virus_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/april-12th-2021-roblox-hackings_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA7 23580 bytes
SHA-256: a9875041b5b87f951358fd3dd9bdab8bfe2e508353e4f4dcea0f13d49f7c57b2
font_01_sfnt_off000081e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E2 18128 bytes
SHA-256: b9f08026c647b25d1cbf27c4e3353f6da09230577129b28a5922337ebb67dde2

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